Partager

Document IIF

Principes pour la liquéfaction de l'hydrogène avec l'accent mis sur les processus de prérefroidissement.

Principles for the liquefaction of hydrogen with emphasis on precooling processes.

Numéro : pap. n. 080

Auteurs : WALNUM H. T., BERSTAD D., DRESCHER M., et al.

Résumé

This paper elaborates a concept for designing efficient large scale hydrogen liquefaction plants, based on dividing the process into 4 independent stages and finding the optimum solution for each stage. The main focus is put on the precooling stage. Not because of its power consumption, but because it is the stage with the most degrees of freedom in design. Several processes have been discussed, mentioning some of the main advantages and disadvantages. One of the main challenges in efficient hydrogen liquefaction is light gas compression. This is unavoidable, since only light gases can provide cooling at the required temperature levels, but should be minimized by using heavier fluids where possible. Due to the higher exergy efficiency of compression compared to refrigeration, the hydrogen feed pressure should be as high as possible, as long as the pressure reduction in the liquefaction stage is performed by expansion machines instead of throttling.

Documents disponibles

Format PDF

Pages : 273-280

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Principles for the liquefaction of hydrogen with emphasis on precooling processes.
  • Identifiant de la fiche : 30006689
  • Langues : Anglais
  • Source : Cryogenics 2012. Proceedings of the 12th IIR International Conference: Dresden, Germany, September 11-14, 2012.
  • Date d'édition : 11/09/2012

Liens


Voir d'autres communications du même compte rendu (78)
Voir le compte rendu de la conférence

Indexation